Machine for making baking-powders.



No. 840,686. PATENTED JAN. 8, 1907. H. M. BROOK. MACHINE FOR MAKING BAKING POWDBRS.

APPLICATION FILED MAY 19,1906.

3 SHEETS-SHEET 1.

PATENTED JAN. 8, 1907.

H. M. BROOK. MACHINE FOR MAKING BAKING POWDERS. APPLICATION FILED MAYlQ, 1906.

3 SHEETS-SHEET 2. (Q Q \QQ 5/ 3 Q30 m a 1 a QQ a x w Q 0 N N b Q, fix Q g Q n \0 R i N ski W M Q N m J N 1 g Q N 3% I Q y b \a Q R N 1) m QB m w Q Q v j a r & lMBroo/I PATENTED JAN. 8, 1907.

H. M. BROOK. MACHINE FOR MAKING BAKING PQWDERS.

APPLICATION FILED MAY 19,1906.

3 SHEETSSHBET 3.

W smm Snuenloz liMB'rooizr NITE STATES P TENT OFFICE. HARLEY BROOK, or SAGINAW, MICHIGAN. MACHINE FOR MAKING BAKlN G- POW D ERS.

Toall whom it may concern: v

Be it known that I, HARLEY BnooK, a citizen of the United States, residmg at Saginaw, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements in Machines for Making Baking-Powders, of which the following 1sa specification.

This invention contemplates certain new and useful improvements in mixing-machines; and the object of the invention is to provide anim roved machine or apparatus ormakin'gb 'n -powder, the machine being particularly designed for household or kitchen use, so

self the proper ingredients to produce a bakingowder, being thereby insured that the res tant mixture-shall be free from starch or alum or other adulterants which are so commonly employed in baldng-powder'for commercial use.

While the invention is particularly designed for the above purpose, it is to be understood that the mechanism is adaptable for mixing various ingredients other than those necessary to produce baking-powder and that the constructions, arrangements, and combinations of parts may be embodied in an apparatus for any urpose where the commmgling and thoroug agitation of two or more substances are desired.- 1

The invention also contemplates an improved construction and arrangement of parts whereby an exact predetermined amount of each desired ingredient may be fed from the compartments containing the same to the mixing or agitating device, the parts being so arranged that a pointer will indicate what amount of each substance is being discharged from the respective compartments of'a suitable magazine or storage-reservoir.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for eflecting the result reference is to be had to the following description and accompanying drawings, in which I Figure 1 1s a transverse vertical section of my improved mixing-machine. Fig. 2 is a longitudinal section thereof. Fig.3 is a perspective view. Fig. 4 is a horizontal. sectlonal view on the line as :c of Fig. 1. Figs. 5, 6, 7, 8, and 9 are detail vertical sections illustrating parts in difierent positions in the several views. Fig. 10 is a side elevation.

Specification of Letters Patent. Application filed May 19.1906. Serial No. 317.719.

reference characters.

that the housewife may in an efficient and expeditious manner mm for her- Patented Jan. 8, 1907.

I 7 Corresponding and like parts are referred description and indicated to in the followin E the drawings by the same in all the views 0 The body portion 1 of my improved mixmg apparatus is in the present instance in the form of a cylinder designed to house the mixing devices, hereinafter described, and provided at its bottom with a receiver 2 in the form of a tray or cup, which closes the lower end of the body dportion 1 and is designed to receive the mixe materials, so that they may be carried from the'apparatus and ap'pliedto the desired use. The body ortion 1 is surmounted by a hopper 3, t e' two together constituting the casing of the apparatus, and the hopper 3 is divided by a partition 4 into two compartments, (designated 5 and 6,respectively.) While any number of these compartments maybe employed, according to the use to which the apparatus is to be put, in the present instance 0 y two are used, compart ment. 5 being larger than the compartment 6 and the larger compartment being intended for cream of tartar, while the smaller com- %artment is intended for bicarbonate of soda.

ach of the compartments 5 and 6 is provided at its lower end with a dischar e-opening 7, leading to a horizontally-exten .ing cylinder 8, which is seated, preferably at its rear end, in a socket, 9 in a sup orting-plate 10, which in the present embo iment of the invention is so arranged as to be attached to the Wall or the like to sup ort the entire apparatus. There are two 0 these cylinders 8, one for each com artment, and they are arranged side by si e, as shown. As both cylinders and their concomitant parts are substantially alike except in the proportion of theparts, it will be sufiicient to describe but oneof them.

In the cylinder 8 there is mounted a rod 11, to which a illunger 12 is fixed. Interosed between t e plunger 12 and the rear end of the cylinder is an expansion-spring 13, always under plunger 12 up against astop device 14, which m the gesent instance is a depending flange at the ont side of the discharge-opening 7. 15 desi ates another plunger, which is mounte to slide on the rod 11 in front of the plunger 12, and 16 designates an actuatingplate or thumb-piece mounted to slide on the outer end of e rod 11. An expansion- 1 s ring 18, hooked into 16 and 15, holdin them together as well as apart, is interpose sufficient tension to press the between the plunger 15 and the actuatingplate 16, the tension of thespring acting to press the two apart, and the outer movement of the actuating-plate 16 is limited b. a knob 17 on the rod 11. As indicated in t e detail horizontal sectional view Fig. 4, the actuat-- in -plate 16 extends from oneirod ll to the other and is mounted upon both of said rods. 19 designates a protuberance or swell upon the rod 11, said swell being desi ed to limit the inward movement of the pihiae 16 upon the rod 11. Describing now the operation of this portion of the apparatus, reference is to be particularlyhad to Figs. 5 to 9-, inclusive. The parts shown in- Fig. 5 are in their normal positions, in which the spring 13 is holdin the fixed plunger 12 against the flange 14 and across the outlet-opening 7, while the spring 18 is pressing the late 16- out against the knob 17 and 1s hol mg the lunger 15 at the outer end of the cylinder, it lieing understood that the s ring 18 is hooked into the parts 15 and 16. To discharge the ingredients from the hoppers, the operator presses upon the actuatmg-plate 16, which first moves said plate inwardly until its independent movement on the rod 11 is arrested by the swell 19 on said rod, and said movement of the plate 16 will, it is manifest, slide the plunger 15 inward-1y also until it brings up'against the flange or stop 14. This position is shown in Fig. 6, and utothis point there has been no movement 0 "the plunger 12, the latter remaining in position to close the dischargeopening 7. A further movement of the actuatinglate 16 in an inward direction will move t rod 11 inwardly also on account of the contact between the late 16 and the swell 19-, and this, it is evi cut, will result in moving the plunger 12 inwardly against the action of ist s ring 13 to open t e discharge- 0 ening and a low the ingredients to'flow into tlib space between the dplungers- 12 and 15-. This space is produce owing to the fact that the plun r 12- may move inwardly, as just described, while the inward movement of the plunger 15 beyondthe front edge of the dischar e-openi'ng is prevented by its contact wit the flange orstop 14. The parts will now be in either the position shown in Fig. 7 or that shown in Fi 8, according to the degree of movement of t e actuating-rod 1-1'. As soon as thismovement has been accom-plished to fill the space between the two plungers the plate 16 is released, and both of the lungers 12 and 15 will be moved outwar ly in their spaced-apart relation, owing to the space between them being filled with theingredients. It is of course understood thatthe entire movement of both plungers in an outward direction to return them to their normal ositions is effected by the spring 13, whic finally brin s up against the inner side of t 14, while the spring 18 serves the moving the thumb-piece or actuatinglate 16 out against the knob 17 to its initia and normal position.

In the return movement of the plungers above described the ingredients in t 1e space between the two plungers will be carried into registry with the discharge-opening 20 in the bottom of the cylinder, and the ingredients from both cylinders will thus be simultaneously dropped to the revoluble mixing device 21, mounted on a transverse shaft 22, journaled in the c lindrical body portion 1, and from thence tlie mixed ingredients will flow to a second revoluble mixing device 23, mounted upon another transverse shaft 24. The upper and lower mixing devices are both in the present instance constituted by rin s, as clearly illustrated in the drawings, and the lower mixing device is arranged in conneetion with a sieve 25, mounted in the body portion 1, and is designed to-scrape the mixed materials through the sieve into the cup 2. In the lower end of both compartments 5 and 6 of the hop er 3 are located agitating-blades 26, mounte upon a shaft 27 and designed to agitate the material as it is dischar ed from the compartments and revent t e same from becoming caked. A lso mounted upon the shaft 27 is a toothed segment 28, ro vided at one end with a hook 29-, by whic it is connected to one end of a spring 30, the other'endof said spring being secured to any stationary part, such as a side of the supporting-plate 10. The segment 28 is provided with anopening 31, throu h which projects a shoulder 32 of a rod 33-. he rod 33' is connected at one end to the actuatin -plate 16. BK this means the rod 33 is moved inwardly w en the plate 16- is pressed upon, and as it moves inwardly the en agement between its shoulder 32 and the wa l of the opening 31- in the segment 28 will swing said segment about the shaft 27 as an axis. The return movement of the segment is accomplished by means of the spring 30. The teeth of the segment 28 are adated to mesh with a pinion 34, mounted on t e outer end of'the shaft 22, and said shaft also carries a larger gear-wheel 36,, which meshes with a pinion 37 on the outer end oi 'the shaft 24.

From the foregoing description it will be seen that as the late 16 is pressed inwardly to effect the disc argeof the predetermined amount ot'ingredien-ts into the body portion 1 which constitutes the casing for the mixing devices, the said inward movement will by means of the actuating-rod 33 swin the segment 28 and cause the rotation o the pinion 34a and its shaft 22 to rotate the upper I mixingdevice 21, while at the same time the movement of' the pinion 34 and its shaft 22 will in turn rotate the larger gear-wheel 36,. the plim en 12 which will'cause e stop or 'ange I lower mixing; device 23. The segment 28 is purpose of 1 provided at one corner with-arecess 38 dea morerapid rotation of the void of teeth, and its movement in the return direction as it is pulled back by its spring 30 is suchthat this recess will at the imit ef such movement be brought opposite the pine ion 34. Hence the segment 28 will be carried entirely out of mesh with the pinion 34, and the wheel 36 may then be. turned by hand (for which purpose it isprovided with a. handle 39) to effect the further rotation of the mixing devices independently of the mechanically and automatically operating means constituted b the spring-actuated segment.

It is one o the important features of this invention that means be provided to determine always just what amounts of the several ingredients are being discharged from the respective compartment-s. For this purpose I provide the actuating-rod 33 with another shoulder 40, which engages a hook 41 on one end of a bell-crank lever 42, fulcrumed on a stud 43 and having a return-spring 44' wound about its axis. The arm 45 of the bell-crank constitutes a pointer which extends alongside of the hopper 3 toward the front thereof and is adapted to register with different graduations 46 on the front of the hopper. For instance, the main graduations, which are here shown as three in number, may indicate a heaping tea-spoonful, a level teaspoonful,

and a rounding or half teaspoonful, respec tively. It will thus be seen that by means of the engagement of the shoulder 40' with the hooked end 41 of the bell-crank 42 the inward movement of the plate 16 will carry the pointer 45 downwardly to one or the other of the graduations proportionately to the inward movement of the actuating-plate 16 and proportionately also to the inward movement of the plunger 12.; i As indicated in Fig. 8, the actuating-plate 16 has been moved inwardly as.faras possible to carry the plunger 12 completely away from the discharge-opening 7 to discharge the largest amount of the materials of which the apparatus is capable. As illustrated in Fig.

7, the actuating-plate 16 has been movedv only partially inward, and accordingly the space between the plunger 12 andthe plunger 15 is not so large, and a smaller amount of the materials will thus be discharged.

From the foregoing description in connection with the accompanying drawings it will be seen that I have provided an improved apparatus of this character in which the amounts fed from the hoppers or the com-' partments thereof may be determined to an accurate degree, and whereby the agitation, the discharge, and the thorough commingling of the ingredients is effected by merely pressing in the actuating-plate 16, the parts being then automatically returned to their normal positions. By the provision of the segment 28 and the arrangements by which it is carried completely out of engagement adapte with the pinion 34 it is obvious that the mixing devices 21 and 23 may-be operated by hand independently of the mechanical actuating devices for .such parts, so that the mixing of the materials may be carried on as long as there remains any to be scraped through the sieve 25.

In referring to the parts 8 in the followin claims as cylinders it is to be understood thatthis term is not limited strictly to a structure of cylindrical formation, but is to be given the meaning of a casing or housing for the plungers, no matter of what shape such housing may be.

Havin thus described the invention, what is claime as new is 1. In an apparatus of the character described, the combination of the hopper divided into compartments having separate dischar e-openin s, cylinders arranged side by side eneath t e ho per, plungers in each of said cylinders, the p ungers being adapted to control said diScharge-openin s, each cylinder being provided with a disc arge-openin a rod rigidly secured to a plunger of each c.y inder, an actuating-plate mounted on both of said rods and arranged to move the rods and plungers simultaneously in one direction, and springs adapted to move said plungers and rods 1n the opposite direction.

2. In an apparatus of the character described, the combination of a hopper provided with a discharge-opening, a cylinder mounted underneath said discharge-opening and also provided with a dischar e-opening',

a plun er mounted in said cy inder and (I to close the discharge-opening of the hopper, a rod to which said plunger is rigidly secured, another plunger mounted to move on said .rod, means for moving the movable plunger independently of the rigid plunger, and means for moving both of said plungers together.

3. In an apparatus of the character described, the combination of a hopper provided with a discharge-opening, a plunger adapted to close said discharge-openin a cylinder in which said plunger works, a ro on which said plunger is rigidly secured, another plunger movable on said rod, means for moving said last-named plunger toward the first-named plunger, and means for limiting the independent movement of the plungers.

4. In an apparatus of the character described, the combination of a hopper provided with a discharge-opening, a plunger adapted to close said opening, a cylinder in which said plunger works, a rod on which said plunger is rigidly secured, a plun er slidable .which said plunger said plunger is fixedly held, another plunger ing movement of said plate and slidable plunger 1n one direction on the rod, as and for the purpose set forth.

5. In an apparatus of the character described, the combination of a hopper provided with a discharge-opening, a plunger adapted to close said opening, a cylinder in which said plunger works, means for automatically movin said plunger to its closed position, a stop evice, adapted to limit this movement of the plunger, a rod on which said plunger is rigidly mounted, a slidable plunger mounted on said rod and also-adapted to contact with said stop devices to limit its slidable movement in one direction, an actuating-plate also slidably mounted on said rod, means for pressing said actuating-plate and slidable plunger apart, and means for limiting the' independent movement of said sliziiable plunger and actuating-plate on the ro 6. In an apparatus ofthe character de scribed, the combination of a hopper provided with a discharge-openi a plunger adapted to close said opening an to be moved away from said opening to permit the-materials to be discharged therefrom, a cylinder in which said plunger works, a rod on which said plunger is secured, another plun er slidable on said rod, an actuatinglate Slldably mounted on the outer end 0 said rod, and a spring interposed between said actuating-plate and slidable plunger adapted to press the same apart, the rod being provided with a swell adapted to limit the movement of the actuating-plate in one direction.

7. In an apparatus of the character de-' scribed the combination of a hopper provided .with a dischargeopening, a plunger adapted to close said opening, a cylinder in which said plunger works, a rod on which said plunger is fixedly held, another plun er adapted to slide on said rod, and means or limiting the-inward movement of said slidable plunger at a point on one side of the discharge-opening,whereby the continued movement of the actuatin -rod will move the lunger that is fixedly eld thereon more or ess away from said opening to permit the ingredients to dischar into the space thus produced. I

8. In anapparatus of the character described the combination of a hopper provided with a discharge-opening, aplunger adapted to close said opening, a cylinder in works,a rod on which adapted to slide onsaid rod, means for automatically limiting the movement of said slidable plunger whereby the continued movement of the other plunger and rod will open up a space between the two plungers, and meansfor determinin cord' to 'the be disc arged.

the size of said space, acesired amount of material to plungers ada 9. In an apparatus of the character described, the combination of the hopper provided with a discharge-opening, the lungers adapted to control said opening, a cv inder in which said plungers work said cylinder bemg provided with a discharge-o ening', the mlxmg devices mounted below t e openin in the cylinder in the pathof the materia dropping therefrom, means for actuating sal plungers, means for actuating the mixmg devices through theo eration of the plunger-actuating means, an means for actuating the mixing devices independently of the plunger-actuating means.

10.. In an apparatus of the character described, the combination of the ho per, the

ted to control the feed of material from sai hopper, the c linders'in-whieh said lun ers work said cy inders being rovide Wlfil a discharge-opening a toot ed segment, actuating means for the plungers also arranged to operate said segment, the mixing devices underneath the dischar eopening of the cylinder, and means where y the segment will actuate said mixing devices.

11. In an apparatus of the character described, the combination of the hop er, the plungers-adapted to control the disc arge of material from said ho per, a cylinder in which said plungers wor said cylinder being provided with a discharge-openin mixing devices, a toothed segment desi net l to actuate said mixing devices, means or actuating said plungers, said means bein arranged to also actuate said segment, a sha t upon which said segment is pivoted, and an agitating device mounted on saidshaft.

12. In an apparatus of the character described, the combination of the hop er, the plun ers adapted to control the fee of materiaI from said hopper, cylinders in which said plun ers work, said cylinders being provided wit discharge-openin s, a receivingcylinder underneath the cylin ers of the plungers, mixing devices mounted in such cyliner,. means for actuating said plungers, a toothed segment, the actuating means for the plungers being operatively connected to said segment to turn the same, means whereby the actuation of the segment will operate the mixing devices, and a sieve underneath said mixing devices.

13. In an apparatus of the character described, the combination of the hop er, the

plungers adapted to control the disc arge of material from said hopper, the cylinder in which said plun ers work, said cylinder being provided with a ischarge-opening, mixing devices imderneath the discharge-opening of said cylinder, a segment adapted to actuate said mixing devices, an actuating-plate for said plungers, and an arm connected to said actuating-plate and adapted to engla e said segment to move the same, as an or the purpose set forth.

14. In an apparatus of the character described the combination of a hopper, lungers arranged to control the discharge 0 material from said hopper, mixin devices, a segment adapted to actuate sai mixing devices and provided with an opening, an actuating-(plate for said plungers, a rod connected to sai actuating-p ate' and provided with a shoulder entered in said opening and adapted to move said segment, the se ment being pro- 'vided at one end with a hosi, and a returning-spring connected to said hook.

15. In an apparatus of the character described, the combination of a hopper, lungers adapted to control the discharge 0 material from said hop er, the cylinder in which said plungers wor a movable actuatingplate designed to move said plungers, a rod connected to said plate and movable therewith, a bell-crank lever having one end operatively connected to said rod whereby the movement of the actuatin -p1ate will effect a movement of the bell-crani, the other end of said bell-crank constituting a ointer ada ted to indicate the amounts of materials led by said lungers, the cylinders bein rovided wit discharge-openings control e by said plungers, and a tray underneath said discharge-o cnings and adapted to receive the materia therefrom.

16. In an apparatus of the character described, the combination of a hopper provided with a discharge-opening, a cylinder mounted underneath the discharge-opening of the hopper. and in communication therewith, said cylinder being provided with a discharge-opening out of alinement with the discharge-opening of the ho per, a plunger in said cylinder and adapte to cut off the discharge-opening of the be per, another plunger movable in the cylin er, means whereby the cut-0E plunger may be moved away from the opening in the hopp and means for er limiting the movement of the other plunger.

at a point'on one side of the dischar e-opening of the hopper, whereby a space etween the two plungers will be produced into which space the material from the hopper may fall, and means for .movin both of said plungers simultaneously toward and into registry with the discharge-opening in the cylinder, where'- by the material held in the space between the two plungers, will fall through the dischargeopenm in the cylinder and one of said plungers wi 1 be brought back into position to cut 0H the discharge-opening of the hopper.

In testimony whereof I afiix my signature in presence of two witnesses.

HARLEY M. BROOK. Witnesses:

PHIL. HUBER, HUBERT R. Comvrsn. 

